I have a Yong Heng 110v basic model compressor. I've always used it only to fill guns directly. My 97 cf tank needed topping off today and the Yong Heng needed an oil change so I decided to use the Yong Heng 110v basic model to top off the 97 cf tank. From 3600 to 4500 took about 20 minutes done in 2 sessions with a short cooling period in between. Temp never exceeded 130 F and seemed to stabilize there but I let it cool once anyway. It worked much better than I thought it would for this, and many people have previously posted here and elsewhere that they have used the small compressors to fill tanks with no issues.